// d3dkmdt.h

typedef struct _DXGK_BRIGHTNESS_SENSOR_DATA {
  UINT32                                   Size;
  union {
    struct {
      UINT AlsReadingValid : 1;
      UINT ChromaticityValid : 1;
      UINT ColorTemperatureValid : 1;
      UINT Reserved : 29;
    } Flags;
    UINT ValidSensorValues;
  };
  float                                    AlsReading;
  DXGK_BRIGHTNESS_SENSOR_DATA_CHROMATICITY Chromaticity;
  float                                    ColorTemperature;
} DXGK_BRIGHTNESS_SENSOR_DATA;
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (ns-d3dkmdt-_dxgk_brightness_sensor_data)

_DXGK_BRIGHTNESS_SENSOR_DATA structure

Description

Describes the sensor data brightness.

Members

`Flags`

Flags that represent the type of brightness for the sensor data.

`Flags.AlsReadingValid`

The ALS reading is valid.

`Flags.ChromaticityValid`

The chromaticity is valid.

`Flags.ColorTemperatureValid`

The color temperature is valid.

`Flags.Reserved`

Reserved.

`ValidSensorValues`

A bitmask that represents which sensor values are valid. The valid flags may change between calls. Not all devices will support all or any of the sensor types.

`Size`

The size of the structure. Fields for new sensor types will always be added to the end of the structure if it is revised in future updates.

`AlsReading`

Luminance in lux, measured by an ALS sensor.

`Chromaticity`

A DXGK_BRIGHTNESS_SENSOR_DATA_CHROMATICITY structure that contains CIE 1931 chromaticity coordinates from a color sensor.

`ColorTemperature`

Color temperature in Kelvin, measured by a color sensor.

View the official Windows Driver Kit DDI reference

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